Casement-sash fastener



J. S/VAN BERGEN CASEMENT SASH FASTENER Dec. 20, 1927.

Filed May 14. 1926 Patented Dec. 20, 1927.

3 1m s; van BERGEN, or navmm, m nors.

CASEMENT-SASH FASTENER.

Application filed May, 14,

The present invention relates to casement window sash fasteners and itsobject is primarily to provide a fastener which may be latched andunlatched without the necessity 5 of removing or disturbing the screenswhich are? generally inside of casement windows.

' This and any other object hereinafter appearingmay be attained by thestructure hereinafter particularly 1 body of the specification andillustrated in the accompanying drawing, in which Figure '1 is a topplanview of the device shown attached to window sash and win cated by thearrow on Fig. 1. These means are so arranged as'not to necessitate thedisturbance of the screen mounted in the frame on the inside of thewindow.v The present invention relates to a device also mounted upon theinterior of-the window frame, 3 function of which is to- 'rovide forconveniently tightly drawing t e window into its closed pos'tion andlocking the window. The locking co-operates with a keeper member, whicconsists of a small apertured. late secured to one edge of the windowand arranged to pass through'tlie small slot in the window stop partofthe franrieav The casement windowsash fastener comrises an elongatedkeeper member: generaly designated 1 having a portion 2 adjacent theend. thereof, oflset from the plane o the major portion of said member,and attached to the window sash'r3 by'thescrews 5 4. The member 2'extends at right angles tothe sash -3 and parallel to the horizontalswinging movement to the sill 5. An I opposite endof the member 1 is adause as ahandle. A transverselyted for described in the movement of thedescribes the. arc of of the window structures are free .it is desiredto o the device on the. window frame 1 tion'is hangin h until the hei'cfi cam tightly engages-withm.

of the window relative opening '6 adjacent the isposed slot 7intermediate saidofiset; portion and 1926. Serial no.1oao7o.

generally designated 11, having a, handleportion 12 and a head portion13. The head portion 13has a helical'cam surface .14 which is adapted.to. rotate into and-out of camming engagementwithin the keeper 7 duringthe rotatingmovement of the lever 11. 9

The stop -9 has disposed aperture member 1 may pass a transversehorizontally 15 through which the during the swinging window. The insidescreen 16 is retained by said stop whichis attached to 'the frame 17mounted on the wall 18. Y 1 a The offset portion of the member 1 isprovided'so' that when the inner end'of same a circle during ,the' ofthe window, the said inner end will not contact 'with, the wall framenor with the stop, yet when the window is closed, a tight joint willbeinsured. It will be noted that the inner end of the member 1 projectsinwardly beyond the' inside screen, therebymaking it unnecessary toremove or disturb the screen whenever nor close the window. It isobvious that the member 1 may be used for right andl fthandinstallations. It .will'be understood that when-it is desired to fastenthecasement window, the window isswung inwardly until. it strikesswinging movement the stop,-and the lever, whose handle por-- down, .1srotated clockwise fromthe :spirit 'ofthis invention as def fined by'theappended claims.

I claim? 1.,A casement window sashfastener comprisin the wmdow sash,said keepermember having a'blade-like portion-[devoid of lateralprojections and having an opening therein adapted for use as a handle,afastener ada ted for attachment to the window stop, 1'05 sai fastenercomprising a lever having-a portion adaptedffor camming engagement- 4within the keeper member. I

2. A-ca'sement window sash fastener comprisinga flatblade-like memberhaving a lm a keeper 'member -for attachment to keeper aperture atoneendthereof and an offset portion at the other end thereof-adapted forattachment to the window sash, a fastener adapted for attachment to thewindow stopand adapted to rotate into and out ofcamming engagement withthe keeper during I 3.

the rotating movement of the lever. casement window sash fastenercomprising. an elongated flat blade-like member aving a transverselydisposed slot adjacent one end thereof adapted for a keeper and theother endthereofibein'g adapted for atf tachment to the window sash, afastener attached to the window stop, said fastenercomprising aoleverand a head portion havprising an elongated member having a pm tionadjacentone endthereof ofiset from inga surface adapted to rotate intoand out. of cammin engagement within the keeper, during tie rotatingmovement of the lever.

4. A casement window sash fastener, comthe plane of the major portion ofsaid member attached to the window sash at right angles thereto andparallel to the horizontal mounted on the. window stop, said fastenercomprising a handle portion and a head portion. said head (portionhaving a helical cam surface adapte to rotate into and out of cammingengagement within the keeper during the rota-ting movement of thekeeper.

5. A device of the character described, including a casement window, ascreen permanently-supported adjacent said window, a combined keeper andwindow operator carried by said window' and projecting through saidscreen supporting means, an a fastener on said supportingmeans forengaging the combined keeper and window operator. 1

Signed at Chicago this 11th day of May, 1926. I P

JOHN s. VAN BERGEN.

